in the beginning there was MULTICS
later there was Unix
the world marched on with Unix but Bell Labs decided to improve upon this again and made Plan 9.
but unix was good enough so nobody could replace it, other than windoze which just snuck by through fiat.
the working group for plan 9 was sold off, and the company rewrote it as a virtual machine hoping they could use that to get it on more platforms and find a market that they could sell it to. this rewrite was Inferno.
the virtual machine was called Dis, and the language was called Limbo, which basically became similar to the "java runs on mobile devices" but it was a much simpler system overall.
nobody cared about Inferno so it sunk.
Google hired Pike who designed it, who in turn made Go, which is basically Limbo but instead of running on Dis it just runs as a normal program.